| 1. | The direction of conventional current flow is counterclockwise .
传统的电流方向是逆时针方向。 |
| 2. | Such storms spin counterclockwise in the northern hemisphere .
这种旋暴风在北半球是作逆时针方向旋转。 |
| 3. | If you face north, the sun appears to move through the sky anti-clockwise .
如果你面朝北方，太阳看来象是逆时针方向在天空运转。 |
| 4. | If the wheel is rotating counterclockwise, its angular-momentum vector is directed eastward .
如果轮子是逆时针方向旋转，其角动量矢量的方向朝东。 |
| 5. | Positive frequencies are produced by anticlockwise rotation and negative frequencies by clockwise rotation .
正频率是逆时针旋转产生的，而负频率是顺时针旋转产生的。 |
| 6. | Positive frequencies are produced by anticlockwise rotation and negative frequencies by clockwise rotation .
正频率是用逆时针旋转来产生，而负频率是用顺时针旋转来产生。 |
| 7. | It is formed by a system of air rotating anticlockwise in the northern hemisphere and clockwise in the southern .
它是由一种北半球朝逆时针方向旋转而南半球向顺时针方向旋转的大气体系形成的。 |
| 8. | Computer : rotate valve counterclockwise to open hatch
逆时针方向旋转阀门以开启孵化室 |
| 9. | Move the helicopter to the left , repeating step b above
以逆时针的方向重覆执行步骤b 。 |
| 10. | Cull back faces with counterclockwise vertices
按逆时针顶点剔除背面。 |
